October 16, 2009
This photo taken July 11, 2009 shows a native plant like the Common Milkweed which make up the food web that attracts insects and the predators that feed on them. The physiology of many of these insects are locked into the plants with which they've co-evolved. The Monarch butterfly, for example, gets its nourishment primarily from milkweeds. If milkweeds were to disappear, chances are the Monarch butterfly would become scarce, too. (AP Photo/Dean Fosdick)
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